如何将消息发送到外部控件？ [英] How do I can get messages sent to a external control?

问题描述

我的目标是拦截（通过VB.NET）发送到外部ComboBox控件（C ++程序）的所有CB_FINDSTRINGEXACT消息，我知道Handle，就像Spy ++那样（见下图链接）：



查找间谍++消息



可能是EasyHook或其他一些Hook引擎......但是网上的文档确实很差（VB.NET中没什么）。 我问自己为什么5年或更长时间没有人发布更新关于挂钩的文章：可能是七点64位中的Hook并不像EasyHook那么轻松？

解决方案

所需的内容称为 全局 Windows Hook 。请参阅：

http ：//msdn.microsoft.com/en-us/library/windows/desktop/ms632589%28v=vs.85%29.aspx [ ^ ]，

< a href =http://msdn.microsoft.com/en-us/library/windows/desktop/ms644990%28v=vs.85%29.aspx> http://msdn.microsoft.com/en-us /library/windows/desktop/ms644990%28v=vs.85%29.aspx [ ^ ]。



这里的关键是 global （请参阅上面引用的第一个MSDN库的 global 的解释）。它使问题变得更加困难：您将无法在VB.NET应用程序中使用P / Invoke和调用钩子方法。根据Microsoft文档，您需要在本机DLL中安装挂钩。如果您使用的是C ++，则适合编写此类DLL。然后你的应用程序可以使用这个DLL来完成剩下的工作。



在混合模式中进行它是非常有益的（ managed + unmamaged）C ++ / CLI项目，您可以将托管的.NET代码（ref托管类型）与非托管类型自由混合：

http://en.wikipedia.org/wiki/C%2B%2B/CLI [ ^ ]，

http://www.ecma-international.org/publications/standards/Ecma-372.htm [ ^ ]，

http://www.gotw.ca/publications/C++CLIRationale.pdf [ ^ ]，

< a href =http://msdn.microsoft.com/en-us/library/xey702bw.aspx> http://msdn.microsoft.com/en-us/library/xey702bw.aspx [< a href =http://msdn.microsoft.com/en-us/library/xey702bw.aspxtarget =_ blanktitle =New Window> ^ ]。



请注意，基于钩子的应用程序在开发难度方面远高于平均水平，尤其是调试。

- SA

My goal is to intercept (by VB.NET) all CB_FINDSTRINGEXACT messages sent to an external ComboBox control (C++ program) of which I know the Handle, like Spy++ does (se the linked below image):

Spy++ messages looking for

May be by EasyHook or some other Hook engine... but online there is really poor documentation (and nothing in VB.NET). I ask myself why are 5 or more years that no one posts updated Articles about hooking: may be to Hook in Seven 64 bit is not so "Easy" as EasyHook tells??

解决方案

What it takes is called Global Windows Hook. Please see:
http://msdn.microsoft.com/en-us/library/windows/desktop/ms632589%28v=vs.85%29.aspx[^],
http://msdn.microsoft.com/en-us/library/windows/desktop/ms644990%28v=vs.85%29.aspx[^].

The key here is global (please see the explanation of global starting from the first MSDN library referenced above). It makes the problem more difficult: you won't be able to just use P/Invoke and call hook methods in your VB.NET application. According to Microsoft documentation, you will need to install the hooks in the native DLL. If you are using C++, it will be suitable for writing such DLL. And then your application can use this DLL to do the rest.

It would be very beneficial to do it in a mixed-mode (managed + unmamaged) C++/CLI project where you can freely mix managed .NET code ("ref" managed types) with the unmanaged:
http://en.wikipedia.org/wiki/C%2B%2B/CLI[^],
http://www.ecma-international.org/publications/standards/Ecma-372.htm[^],
http://www.gotw.ca/publications/C++CLIRationale.pdf[^],
http://msdn.microsoft.com/en-us/library/xey702bw.aspx[^].

Note that the applications based on hook are well above average in terms of difficulty of development, especially debugging.

—SA

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